Diamond growth in combustion flames

Yalamanchi, RS and Harshavardhan, KS (1990) Diamond growth in combustion flames. In: Journal of Applied Physics, 68 (11). pp. 5941-5943.

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Abstract

Diamond crystallites were synthesized using various oxygen‐hydrocarbon flames. The flames have been profiled in real time using a nonintrusive diagnostic technique. Optical emission spectra for different zones have been recorded and the active species identified. Diamond growth was observed only in the thermodynamically unequilibriated primary combustion zone of the flames. Carbon‐bearing species, atomic hydrogen, and atomic oxygen, noted to be critical for diamond growth, were observed in the flames. The diamond growth was confirmed by x‐ray diffraction, laser‐Raman analysis, and scanning electron microscopy. The study offers the first insight into the flame spectra in the context of diamond synthesis at atmospheric pressures.

Item Type:	Journal Article
Publication:	Journal of Applied Physics
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	03 Feb 2011 09:15
Last Modified:	03 Feb 2011 09:15
URI:	http://eprints.iisc.ac.in/id/eprint/35189

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